Improvement in turbine water-wheels



UNITED STATES PATENT QFFICE. v

JOHN G. SGRIBNER, OF ASHLAND, NElV HAMPSHIRE.

IMPROVEMENT IN TURBINE WATER-WHEELS.

Specification forming part of Letters Patent No. 134,1?11, datedDecember 21, 1872.

To all whom it may concern:

Be it known that 1, JOHN G. SCRIBNER, of Ashland, of the county ofGrafton, of the State of New Hampshire, have invented a new and usefulImprovement in Turbines or Tater-Wheels; and do hereby declare the sameto be fully described in the following The principal wheel A of theturbine consists of a cylinder, a, having t'wo wings, I) b, projectingfrom its periphery and against a cap-plate, 0, extended over thecylinder and making part of the wheel, all being as shown. The saidwheel A is mounted on a vertical shaft, B, and arranged within a hollowdrum or case, 0, which, at its periphery, opens into another such case,D, in which is arranged the secondary wheel E, which is a cylindernotched at its periphery, as shown at d d. The wheel E extends into thecase 0, so that the circumferences of the two wheels may run in contactor close together. The secondary wheel is fixed on a vertical shaft, F,the two shafts B and F being connected by gears G and H. The gear G isfastened firmly to the shaft B, but the gear H revolves freely on itsshaft and carries a pawl, e, which engages with a ratchet-wheel, f,fixed upon the shaft F, the said pawl being provided with aspring, g,for keeping it in engagement with the ratchet-wheel, as circumstancesmay require. The purpose of the pawl and ratchet is to admit the twowheels A and E to be adjusted so as to enable the floats or wings of thewheel A, while it may be in revolution, to enter and pass at propertimes through the notches of the wheel E, each of the said notches beingso formed as to make a close joint with one of the wings, while thenotch and wing may be in conjunction. Through the flooring t of the mainwheel-case and near to and on opposite sides of that part of the wheelEthat projects into the said wheel-case, is an induct, K, and one or moreeducts, l, the induct leading from a spout or conduit, m, arrangedbeneath the floor. The

water, on entering the wheel-case, does so tangentially to the curve ofthe-wheel, and, after passing around nearly the entire case and drivingor revolving the wheel, will escape directly or tangentially out of thecase, thereby operating with little or no reflection, the secondarywheel serving not only as an abutment to enable the water to revolve themain wheel, but as a means of separating the educt from the induct orinducts, and to enable the main wheel to pass with close joints thesecondary wheel.

Fig. 4 is a side view and Fig. 5 an under side view of the main wheel,each tooth or wing of which is shown as provided with a recess or notch,0, extending from its baseupward, the purpose of such notch being toenable the wing or tooth to be made of sufficient strength, and take thepressure of the water from the induct while the bottom of the tooth orwing may be passing over that edge of the induct that is next thesecondary wheel.

The two wheel-cases opening into one another, as shown, I term theduplex wheelcase.

By the peculiar arrangement of the inducts and educt or educts and thecap-plate of the main wheel and its case, as shown and described,together with the arrangement of such and the secondary wheel and case,the pressure of the water is not only brought to act without reflection,but to press the main wheel upward so as to relieve its step, p, andpivot r from friction while the wheel may be in revolution.

Furthermore,- there is a notch, 8, made in the said floor, and extendedfrom the educt underneath the secondary wheel, such notch or recessbeing to enable the pressure of the water to act against the secondarywheel to raise it so as to prevent its pivot 20 from wearing the step c.

- I make no claim to a water-wheel constructed as described in theUnited States Patent No. 36,415, whether such wheel be with or withouthe separating flange to its buckets.

. In the duplex turbine, as set forth, I claim as my invention orimprovement as followsthat is to say:

1. The combination and arrangement of the ratchetwheel f, the pawl c,and pawlspring g, with the gears G H, the shafts B F,

3. Inthe double turbine, as set forth, the notch 8, arranged with theinduct and the auxiliary wheel, as and for the purpose set forth.

JOHN G. SORIBNER.

Witnesses:

R. H. EDDY, J. R. SNOW.

